Sucker rod wrench



7 April 3, 1945 F. s. RUDROW ETAL SUCKER ROD WRENCH Figled Feb. 16, 1943 and Dunfflfladram Patented Apr. 3, 1945 SUCKEB non WRENCH Frank s. Rudrow and Kenneth N. Mills, Tulsa, kla., assignors to Bethlehem Steel Company, a corporation of Pennsylvania Application February 16, 1943, Serial No. 476,096

(01. si-s3) 3 Claims.

Our invention relates to wrenches and more particularly to snap type sucker rod wrenches.

One'oi the objects of our invention is to provide a sucker rod wrench which is particularly efiective in setting up and breaking the joints I the head of said wrench.

A still further object of our invention is to provide asucker rod wrench having an oscillatory handle secured in the head by means of a pin and having means within the head to be engaged by the handle toprotect said pin from shearing stresses.

Other objects and advantages of our invention will be understood from the specifications and drawing, in which:

Figure 1 is a- Side elevation of a wrench constructed in accordance with our invention;

Fig. 2 is a front View lot the wrench shown in Fig. 1;

Fig. 3 is a side view partially in elevation and partially in sectiomand Fig. 4 is a section taken along line 44 of Fig. 1.

Referring to the drawing more in detail, If) designates a'wrench having a head H and an elongated handle l2 having an arcuate end portion l5. Jaw l3 to embrace the square of a sucker rod or other object to be turned. The front wall 23 of head II is provided with an anvil 22 which receives the impact of hammer portion l2 of handle l2 when said handle is oscillated from the position shown in dotted lines to the position shown in full lines in Fig. 3 of the drawing. Head II is further provided with a recess or socket M into which the arcuate end portion l5 of the handle l2 extends, and a seat 20 in the back wall 2i to provide a bearing for the arcuate end portion [5. The side walls ll of the head H are provided with openings Hi to receive the ends of the pin I8 which passes through a hole l9 provided in the arcuate end portion H of handle l2 and constitutes a retaining member to prevent the separation of the handle [2 from the wrench head II, when the handle is in its idle or inoperative condition as Head ii is provided with a gripping.

shown in dotted lines in Fig. 3. .In the structure shown in Figs. 3 and 4 of the drawing, the hole l9 in the arcuate end portion [5 of handle 12 is larger than the pin la, a loose fit for'the pin being provided. When the handle is in its inoperative condition the end portion thereof is slightly movable and may contact the pinbut as no stresses are being put on the handle the pin is in no danger of receiving shearing stresses. As shown in the drawing, the contour of seat 20 is concentric with the pin l8 and substantially conforms to the contour of the end portion l5 of the handle 12. Whenthe hammer portion [2' i in facial engagement with the anvil 22, the end portion is in facial engagement with the seat portion, the axes of the pin, seat and end portions will substantially coincide which will center the pin 18 in hole I9,

and the pin will thus be rendered inoperative and in spaced relation with the sides of the hole I9 in the end portion l5. Upon striking the handle a blow in the direction of the arrow as shown in Fig. 3, force will be transmitted to the head II by the hammer portion 42 engaging the anvil 22 and the end portion l5 engaging the seat 20. The anvil 22 and the seat 20 will receive all of the transmitted force and therefore during this operation no force will be transmitted to the pin l8, due to the fact that seat 20 is so formed that movement of the handle is opposed in all directions relative to said pin.

While we have shown an enlarged hole [9 in the handle I2 to receive pin I8 the same result could be obtained by rigidly mounting the pin I8 in the handle l2 and providing enlarged holes in the side walls ll, or by loosely mounting the pin both in the handl l2 and in the side walls ll.

While we have shown our invention in but one form, it will be obvious to those skilled in the art that it is not so limited, but is susceptible of various changes and modifications without departing from the spirit thereof, and we desire, therefore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is: v

1. A wrench comprising a head member and an oscillatory handle member, said head member having a jaw, an anvil, and an integral seat portion, said handle member comprising an end portion disposed within said head member, the wall portion being spaced therefrom a distance greater than the width of said end of said handle member, said end portionhaving an ofiset arcuate portion opposed to said seat portion and adapted for engagement therewith, and a hammer portion to engage said anvil, a retaining pin disposed transversely through said head member and said end portion of said handle member loosely mountedwithrespect to. one of said members and adapted. to. be disposed in spaced relationship therewith when said handle is in contact with the anvil and said integral seat portion, said integral seat portion having portions adapted to embrace said offset portion of the end: of? said handle adjacent the points where saidoffset portion joins said handle to oppose. longitudinal; movement of said handle with respect to said. head and said pin during engagement of said handle with said anvil and saidIseat-portiono 2. In a wrench of the character described, a head comprising wrench jaw faces, an anvil face, a. socket having: a. wall. face. substantially an. extension of. said anvil face and: anint'egral. inner circularwall face opp'o'sedlthereto havingaits center approximately. central of said socket, said faces andzthe axis: of'saidicenter: extending.- transverse of thee head,- an. elongated. handle: having an end within said socket, the wallfface directly oppositethecircular wall face being spaced therefrom a distance greater than the width of said end of the-handlaand, said end havingan offset arcuate portion in opp'osedrelationship with said circular face andada-pted for facial engagement therewith within said socket and a hammer'face adapted for facial engagement with said anvil face, said" circular face embracing? a substantial portion of saidofisetarcuate portion of, saidhandie during; engagen'i'entof said handle with said anvil face and said circular face to oppose longitudinal movement of said handle with respect to said head during such engagement, and a retaining pin secured substantially on the axis of said center in a non-positioning relationship with said head and said handle, and said socket permitting limited oscillatory movement of said handle about the axis. of said. center away frornsaid anvil face.

3. A-wrench comprising a head member and an oscillatory handle member, said head member having a jaw, an anvil face, and a socket having a wall face substantially an extension of said anvilT face? and a seat integral with said head member and having. an arcuate face opposed to said wall. face, said handle member having a hammen face.v to engage said anvil face and an end disposed within said socket, the wall face directly opposite-said seat" being spaced therefrom a distance'greater than the width of said end of the handle, said end having an arcuate offset having aradius-substantially the same asthe radius of said arcuate face=to=engagesaid arcuate face, a retaining pin extending through said head member and said h'andIe member to loosely retain. said handle member within said" head member'and said offset portion of the endof the handl'e being disposed within said seat and engaging the arcuate face thereof to oppose longitudinal movement of said handle with respect to the head andto' position said members inpredetermined relation to=each other. and said retaining pin to maintain oneofsaid members out of'engagem'ent" with the pin when said hammer face is contacted with said anvilface.

FBI-(TANK S. RUDRGW. KENNETH N. MILLS. 

